// Copyright 2024 RustFS Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! Engine-only object body cache contracts for RustFS.
//!
//! This crate intentionally contains only a minimal skeleton for the initial
//! rollout phase. App-layer semantics and storage-specific read paths stay in
//! the `rustfs` crate.

pub mod backend;
pub mod cache;
pub mod config;
pub mod entry;
pub mod error;
pub mod index;
pub mod key;
pub mod memory;
pub mod metrics;
pub mod moka_backend;
pub mod noop;
pub mod singleflight;
pub mod starshard_index;
pub mod stats;

pub use cache::{
    ObjectDataCache, ObjectDataCacheFillResult, ObjectDataCacheGetPlan, ObjectDataCacheGetRequest,
    ObjectDataCacheInvalidationReason, ObjectDataCacheInvalidationResult, ObjectDataCacheLookup,
};
pub use config::{ObjectDataCacheConfig, ObjectDataCacheMode};
pub use error::ObjectDataCacheConfigError;
pub use key::{NULL_VERSION_ID, ObjectDataCacheBodyVariant, ObjectDataCacheIdentity, ObjectDataCacheKey};
pub use stats::{ObjectDataCacheStats, ObjectDataCacheStatsSnapshot};